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STILLMAN IL STO RY AND RICHARD J. CHAJ tl), OF BROOKLYN, ASSIGNORS TOCHARD 8t BOWELUBRICATING COMPANY, OF NE7 YOR-l(, N. Y.

IMPROVEMENT IN LUBRlCATlNG COMPOUNDS.

Specification forming part of Letters Patent No. hifififififl, datedSeptember 1,1874; application filed i April 28, 1514.-

110 all whom it may concern:

Be it known that we,StrrLLMAN II. S'roRY.

and RICHARD J. Osman, both of Brooklyn, in the county of Kings and Stateof New York, have invented an Improvement in .Lubricat ing Compounds,of. which the following is a specification: 1

This invention is designed to provide a lubricant which will combine, inan unusually high degree, the property of lubricity with that of greatcohesion of its particles,-whereby'the.

tion with those of the others to produce the result desired.

' In the production or manufacture of our im? proved lubricatingcompound we take, say, twenty pounds of beef or muttontallow, which,aside from its smooth or lubresoent nature, is characterized byhardness; seven pounds of parafiineoil, having its well-known limpid andsolvei'itproperties, which prevent the gummiug of fixed oils or fatswith which it may be mingled; one pound of neats-foot oil, favorablyknown for its permanence, combined with great fluidity; and one pound ofcastor-oil, which, as a lubricating substance, is ascertained to possessgreat smoothness, united with comparative \-'iscosity',. when subjectedto even a moderate increase of temperature from friction. Taking'theseoleagi'nons materials, each having its distinctive properties, asdescribed, I melt them together in a suitable vessel, and commingle themby any appropriate means. of a solution of causticpotash, which may beprepared in the manner hereinafter set forth. I then stir the wholetogether until the caustic alkali, by uniting with a portion,'and aportion, only, of the other materials,-tbrms a saponified substance,which commingles with the To the mass I add'two pounds rest, giving acertain homogeneity to the whole, without in any essential degreemodifying the characteristic of each element, which, ashereiubeforeindicated, gives it an advantage as an element in alubricatingcompound designed for use under a wide variety of conditionsand requirements.

As thus constituted, our improved lubricant will be found adapted to allordinary'uses, witha greater efiiciency in the reduction of friction, agreater permanence against dissipation by heat and pressure, andagreater freedom from gumming or thickening than has hitherto beensecured in compounds designed for the same or similar purposes.

In certain cases, where the journals,'steps, or thelike to be lubricatedare very light, or are run under very moderate pressure, the quantity oftallowmay be: reduced, say, ten 'per cent; and when the reverse is thecaseviz.,th-e journals are extremely heavy or run under extremepressure-the quantity of tall'ow may be increased by, say, ten per cent.

We propose, in practice, to add to the mass, in quantity, ashereinbefore specified, say,one ounce of nitro-benzole, whereby any rankor noxious odor that otherwise might prove objectionable in the use ofthe lubricant, is nullified or destroyed.

The solution of potash hereinbefore. referred to may be made by boilingone pound of common crude potash in eight gallons of water, and addingthereto three pounds bydrate of lime, the lime removing the carbonicacid from the-crude potash, and, being precipitated, leaving the potashin solu-tionin a caustic condition. 4

What we claim as our invention 1s-- The improved lubricating compoundcom posed of beef or mutton tallow, parafline-oil,-

forth.

STILLMAN H. STORY. 'It. JHUHARD. \Vitncsscs:

A. M. EDWARDS, JAMES A. WHITNEY.

